The Gander Outdoors near me is clearancing everything because the store is becoming a Gander RV & Outdoors store; 20% off firearms and ammo, 50% off the rest of the store. They had a CMMG Mutant Mk47 which came out to about $760 after the discount. Stellar price IMO.
I've got an AK. I love love love it. Eats steel-cased ammo like a fat kid on Halloween eats candy... I think my average cost for ammo works out to about $0.21/round, which is cheaper than my .22LR stash, and about 1/5 (or less!) the cost of my larger, bolt action rounds. The only way you can really approach $0.21/round with .223/5.56 is to buy 1000 round cases and get it while it's on sale.... and if you're like me, I prefer having a couple different ammo choices in small numbers vs. having to buy 1000 of one style only to find out it doesn't work well in your rifle.
Anyways, last week I bought my first AR, a SIG M400 Elite Ti, and I can already tell I miss the added "je ne sais quois" of the larger round. Understand that even an AR 7.62x39 is probably only going to be a 1.25-1.75 MOA rifle, but that in all reality what it lacks in same-hole accuracy it covers in spades with fun and availability. I am already looking at 300 Blackout uppers to mate to the SIG lower, and if I were able to rewind in time one week I would have gotten the Mutant. It's not quite as reliable as a full AK, but I can definitely appreciate the improved ergonomics and much larger spread of personalization available for the AR platform. 7.62x39 FTW!
BTW, my next "major" purchase is going to be a Rifle Dynamics AK with the Sharps Bros. milled receiver. One of the gun mags tested it with Jim Fuller present for the test, and it turned in sub-MOA groups at 100 yards! But it's $2700.... well worth it for something that will be as rare as unicorn tears that taste like Skittles.